Pulsating DC to constant DC

Discussion in 'General Electronics Chat' started by olvine, Apr 1, 2014.

  1. olvine

    Thread Starter Member

    Mar 10, 2014
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    0
    Hey !!

    How can I get constant DC if I have pulsating DC ?
    e.g A sine wave of 5Vpp and offset of 2.5V then how can I get constant 5V which is maximum amplitude of sine wave...
     
  2. crutschow

    Expert

    Mar 14, 2008
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    Rectifify it with a diode and large capacitor filter. The maximum you can get with a large, low forward drop Schottky diode would be about 4.8V with a small load (a few mA or so).
     
  3. olvine

    Thread Starter Member

    Mar 10, 2014
    99
    0
    basically I want to calculate the amplitude of sine wave using ADC of PIC16F887. But at higher frequencies, lets say 1MHz, it won't get the samples and skip peaks.
    so what should be done to get these peaks ? How can I slow down the incoming frequency and get the same amplitude as the original frequency.
     
  4. crutschow

    Expert

    Mar 14, 2008
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  5. olvine

    Thread Starter Member

    Mar 10, 2014
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    ok thanks. lemme check.
     
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